Align production env template with non Docker deploy

.env.prod.example

@@ -1,59 +1,49 @@
-# ==========================================
-# AI Agent Admin - 生产环境配置模板
-# 使用已有数据库和 Redis，不启动 postgres/redis 容器
-# ==========================================
-# 使用方式: 复制此文件为 .env.prod，修改参数后运行:
-#   docker compose -f docker-compose.prod.yml --env-file .env.prod up -d
-# ==========================================
+# AI Agent Admin production environment template.
+# Copy this file to backend-fastapi/env/prod.env on the server and replace all
+# placeholder values before starting the non-Docker systemd service.
 
-# 应用名称（也作为容器名/数据卷名/网络名的前缀，多实例部署时须不同）
 APP_NAME=ai-agent-admin
+ENV=prod
+DEBUG=false
+APP_HOST=127.0.0.1
+APP_PORT=8001
 
-# ========== 数据库配置 ==========
-# 数据库类型: postgresql / mysql / sqlserver
+# Database: postgresql / mysql / sqlserver.
 DB_TYPE=postgresql
-# 外部数据库地址
-DB_HOST=192.168.1.100
+DB_HOST=127.0.0.1
 DB_PORT=5432
 DB_USER=postgres
-DB_PASSWORD=your_strong_password
+DB_PASSWORD=replace_with_database_password
 DB_NAME=ai_agent_admin
 
-# ========== Redis 配置 ==========
-REDIS_HOST=192.168.1.100
+# Redis.
+REDIS_HOST=127.0.0.1
 REDIS_PORT=6379
-REDIS_PASSWORD=your_redis_password
+REDIS_PASSWORD=replace_with_redis_password
 REDIS_DB=0
 
-# ========== 安全配置 ==========
-JWT_SECRET_KEY=your-strong-secret-key-change-in-production
-ACCESS_TOKEN_EXPIRE_MINUTES=1440 # 10080  7天
+# Security.
+JWT_SECRET_KEY=replace_with_a_long_random_secret
+ACCESS_TOKEN_EXPIRE_MINUTES=1440
 REFRESH_TOKEN_EXPIRE_DAYS=30
+ALLOW_MULTI_DEVICE_LOGIN=true
 
-# ========== 存储配置 ==========
-# 存储类型: local / minio
+# Local file storage is the default for the lightweight deployment.
 FILE_STORAGE_TYPE=local
-# 本地存储路径（仅 local 类型有效）
-FILE_STORAGE_LOCAL_PATH=/app/storage
-# MinIO 配置（仅 minio 类型有效）
-MINIO_ENDPOINT=192.168.1.100:9000
-MINIO_ACCESS_KEY=minio_admin
-MINIO_SECRET_KEY=your_minio_secret
+FILE_STORAGE_LOCAL_PATH=/opt/ai-agent-admin/storage
+
+# Optional MinIO storage. Leave empty when FILE_STORAGE_TYPE=local.
+MINIO_ENDPOINT=
+MINIO_ACCESS_KEY=
+MINIO_SECRET_KEY=
 MINIO_BUCKET_NAME=ai-agent-admin
 MINIO_SECURE=false
 
-# ========== 端口映射 ==========
-BACKEND_PORT_MAPPING=8000
-WEB_PORT=80
-
-# ========== 钉钉配置 ==========
+# Optional OAuth callbacks.
 DINGTALK_REDIRECT_URI=
 DINGTALK_H5_REDIRECT_URI=
-
-# ========== 企业微信配置 ==========
 WECOM_REDIRECT_URI=
 WECOM_H5_REDIRECT_URI=
 
-# ========== 其他 ==========
 TIMEZONE=Asia/Shanghai
 CACHE_PREFIX=ai-agent-admin:prod: